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Finding the Fourth Proportional to 73,709.20, 110,578.20 and 29,328.40

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Solution

The fourth proportional to 73,709.20, 110,578.20 and 29,328.40 is: 43,998.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,709.20 : 110,578.20 = 29,328.40 : x
  2. Step 2: Convert to fraction form
    73,709.20/110,578.20 = 29,328.40/x
  3. Step 3: Cross multiply
    73,709.20x = 110,578.20 × 29,328.40
  4. Step 4: Simplify right side
    73,709.20x = 3,243,081,680.88
  5. Step 5: Solve for x
    x = 3,243,081,680.88/73,709.20
  6. Step 6: Final answer
    x = 43,998.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.